ALEXANDRIA, Va., May 26 -- United States Patent no. 12,640,367, issued on May 26, was assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT Co. LTD. (Osaka, Japan).

"Positive-electrode active material for nonaqueous-electrolyte secondary cell, and nonaqueous-electrolyte secondary cell" was invented by Toshinobu Kanai (Hyogo, Japan) and Takeshi Ogasawara (Osaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A positive-electrode active material includes a lithium transition metal composite oxide that contains at least 80 mol % of Ni in relation to the total molar amount of metal elements excluding Li. The lithium transition metal composite oxide includes secondary particles obtained by the aggregation ...